A low-metallicity massive #ContactBinary undergoing slow Case A mass transfer - a detailed spectroscopic and orbital analysis of SSN 7 in NGC 346 in the SMC: https://arxiv.org/abs/2304.13720 -> Dark couple – most massive touching stars ever found will eventually collide as black holes: https://idw-online.de/de/news813392

This is a Kuiper Belt object contact binary approximately 36 km long; it orbits the Sun from 42-46 AU and takes 298 Earth years to complete one orbit #kuiperbeltobject #contactbinary #kuiper #486958 #Arrokoth